<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>Second</title>
</head>
<body>
<!--上传文件，get有大小限制，post没有大小限制,上传文件需要指定enctype="multipart/form-data"属性-->
<form action="Second.php" method="post" enctype="multipart/form-data">
    <input type="file" name="file1"><br>
    <button type="submit">提交</button>
</form>
</body>
</html>